Table 3.

Degree of adverse events in the four stimulation groups (left and right DLPFC and M1) and for both stimulation conditions (active, sham)

	Condition	R DLPFC	L DLPFC	R M1	L M1
Headache	Active	1.1 (±0.1)	1.2 (±0.1)	1.1 (±0.0)	1.1 (±0.1)
	Sham	1.1 (±0.1)	1.1 (±0.1)	1.2 (±0.1)	1.1 (±0.1)
Neck pain	Active	1.0 (±0.0)	1.1 (±0.1)	1.1 (±0.1)	1.0 (±0.0)
	Sham	1.0 (±0.0)	1.1 (±0.1)	1.2 (±0.1)	1.0 (±0.0)
Scalp pain	Active	1.1 (±0.1)	1.1 (±0.1)	1.2 (±0.1)	1.2 (±0.1)
	Sham	1.1 (±0.1)	1.1 (±0.1)	1.1 (±0.1)	1.0 (±0.1)
Tingling	Active	1.3 (±0.1)	1.5 (±0.1)	1.6 (±0.1)	1.5 (±0.1)
	Sham	1.3 (±0.1)	1.4 (±0.1)	1.4 (±0.1)	1.4 (±0.1)
Itching	Active	1.2 (±0.1)	1.3 (±0.1)	1.4 (±0.1)	1.4 (±0.1)
	Sham	1.2 (±0.1)	1.2 (±0.1)	1.3 (±0.1)	1.3 (±0.1)
Burning	Active	1.4 (±0.1)	1.6 (±0.1)	1.4 (±0.1)	1.3 (±0.1)
	Sham	1.4 (±0.1)	1.5 (±0.1)	1.4 (±0.1)	1.2 (±0.1)
Sleepiness	Active	2.1 (±0.2)	1.6 (±0.1)	1.9 (±0.1)	2.1 (±0.2)
	Sham	1.9 (±0.2)	1.7 (±0.2)	2.1 (±0.2)	2.2 (±0.2)
Trouble concentrating	Active	1.6 (±0.1)	1.5 (±0.1)	1.5 (±0.1)	1.7 (±0.1)
	Sham	1.5 (±0.1)	1.6 (±0.1)	1.7 (±0.1)	1.5 (±0.1)
Mood changes	Active	1.1 (±0.1)	1.0 (±0.0)	1.2 (±0.1)	1.1 (±0.1)
	Sham	1.1 (±0.1)	1.1 (±0.0)	1.2 (±0.1)	1.1 (±0.1)

Means and standard error of the mean are reported. R, Right; L, left.